core

#### Clearance Moves Menu Items

These are the menu items under the Operation | Graphic Display Window | Clearance Moves submenu:

Auto Insert Moves

Use this documentation if you use Operation | Graphic Display Window | Auto Insert Moves |Preview.

The Auto Insert Moves menu option (Operation | Graphic Display Window | Clearance Moves | Auto Insert Moves) opens the Auto Create Clearance Moves dialog box. You can use this dialog box to add clearance moves (MOVE/POINT commands) between all features or between selected features. For information on how to do this, see the "Using Auto Insert Moves" topic below.

Auto Create Clearance Moves dialog box

When you click OK, PC-DMIS inserts the MOVE/POINT commands.

PC-DMIS does not place move commands prior to the first feature; make sure there is a clear path between the probe's start position and the first feature.

All features - PC-DMIS places the move commands between all features.

If you don't want to do this for all features, close the dialog box and choose new features from the Edit window.

Selected features - PC-DMIS places the move commands between the features you selected in the Edit window before you opened this dialog box. The box beneath this option shows the features you selected from the Edit window.

If you want to change the features, close the dialog box, and choose new features from the Edit window.

Maximum move length - This value defines the maximum length of a move. This value is in mm or inches, based on the measurement routine's units. This means any MOVE/POINT commands that the algorithm calculates to move the probe from on location to another cannot exceed this value.

PC-DMIS attempts to go directly to the next feature, but compensates for collisions by inserting clearance move commands. It continues this process until it defines a collision free path to the next feature. More than one move command may be inserted between features. The higher the value, the lower the amount of time PC-DMIS spends calculating these moves. The recommended value is 100 mm (3.93 inches).

Delete existing moves - This determines whether to delete any pre-existing move commands in the measurement routine.

For dual-arm measurement routines, PC-DMIS inserts MOVE/EXCLUSIVE_ZONE commands as needed to guard against the two arms colliding during execution.

Advanced Settings

Minimum Solution time (sec) - This value is the minimum number of seconds that the algorithm uses to plan a move between two feature commands. A higher value increases the accuracy of the move, but it also increases the computation time. The recommended value is 1 second.

Maximum solution time (sec) - This value is the maximum number of seconds that the algorithm uses to plan a move between two feature commands. A higher value increases the accuracy of the move, but it also increases the computation time. The recommended value is 3 seconds.

Bounding box offset - This value defines the range of space that the algorithm uses to calculate its moves. This value is in mm or inches, based on the measurement routine's units.

If you load in an animated machine, the software changes this to match the machine's working volume. If you don't use an animated machine, the software adds this value to the CAD model's existing bounding box offsets. The recommended value is 1000 mm (39.3 inches).

Auto Insert Moves (Legacy)

Use this documentation if you use Operation | Graphic Display Window | Auto Insert Moves |Legacy.

The Auto Insert Moves menu option (Operation | Graphic Display Window | Clearance Moves | Auto Insert Moves) opens the Auto Create Clearance Moves dialog box. You can use this dialog box to add clearance moves (MOVE/POINT commands) between all features or between selected features. For information on how to do this, see the "Using Auto Insert Moves (Legacy)" topic below.

Auto Create Clearance Moves dialog box

When you click OK, PC-DMIS inserts the MOVE/POINT commands.

PC-DMIS does not place move commands prior to the first feature; make sure there is a clear path between the probe's start position and the first feature.

All features - PC-DMIS places the move commands between all features.

If you don't want to do this for all features, close the dialog box and choose new features from the Edit window.

Selected features - PC-DMIS places the move commands between the features you selected in the Edit window before you opened this dialog box. The box beneath this option shows the features you selected from the Edit window.

If you want to change the features, close the dialog box, and choose new features from the Edit window.

Collision safety distance - This value is in mm. It provides a buffer zone around the probe tip of that distance. PC-DMIS considers close misses within this distance as collisions.

Insert clearance moves offset - This value is in mm. It defines the distance the probe moves away from the part when it detects a collision as it moves between features. PC-DMIS attempts to go directly to the next feature, but compensates for collisions by inserting clearance move commands. It continues this process until it defines a collision free path to the next feature. More than one move command may be inserted between features. PC-DMIS stores this move offset value inside the CollisionMoveClearanceInMM registry entry located under the AutoInsertMoves section of the PC-DMIS Settings Editor.

Maximum Attempts - This defines how intensive the search algorithm is to insert the MOVE/POINT command. The available values are 10 through 100 at increments of 10. If a solution is available, the larger the value, the more intensive the search is to find a solution for the current feature. Also, the larger the number, the more time it takes to calculate that solution.

Delete existing moves - This determines whether to delete any pre-existing move commands in the measurement routine.

For dual-arm measurement routines, PC-DMIS inserts MOVE/EXCLUSIVE_ZONE commands as needed to guard against the two arms colliding during execution.

Within Feature

This menu item (Operation | Graphic Display Window | Clearance Moves | Within Feature) only works in QuickFeatures mode. If the menu item is selected with a check box and you create a QuickFeature, PC-DMIS checks the probe path inside the feature and adds clearance moves as needed within the feature. This is different from the With Feature Creation menu item below, which adds clearance moves between features.

With Feature Creation

You can choose With Feature Creation menu item (Operation | Graphic Display Window | Clearance Moves | With Feature Creation) to enable it or disable it. The menu item shows checkmark when enabled.

With this menu item enabled, PC-DMIS uses a simple algorithm to automatically insert MOVE/POINT commands as you add features to the measurement routine. The angle between the features must be within a range of 30 to 150 degrees. The algorithm cannot solve anything outside this range. For example, two circle features at different depths but on the same face, results in a 0 degree angle between them and can't be solved. When inserting the move commands, this menu item behaves similarly to the Auto Create Insert Moves dialog box and uses one feature above and below the newly inserted feature as the start and end features. This menu item also uses the distance defined in the CollisionMoveClearanceInMM registry entry.

The QuickFeatures menu item activates a new algorithm to generate safe clearance moves as you add QuickFeatures. Automatic safe moves between features that use different probe tip angles are not yet supported. You must manually define those moves.

This functions only in Offline mode.

With Collision Detection

The With Collision Detection menu item is not supported for QuickFeatures.

The With Feature Creation menu item (Operation | Graphic Display Window | Clearance Moves | With Feature Creation) must be selected for this to become enabled. The menu item shows checkmark when enabled.

If you enable the With Collision Detection menu item, the software extends the functionality of With Feature Creation so you aren't limited by the angle restrictions between features. PC-DMIS uses the collision detection algorithm to detect collisions instead of the simple algorithm. It provides clearance moves between the range of features. For each collision found, it then inserts the appropriate clearance moves.